package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.CollectionUtils;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import org.springframework.beans.factory.annotation.Value;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Value("${sky.shop.address}")
    public String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private OrdersMapper ordersMapper;

    @Autowired
    private OrdersDetailMapper orderDetailMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Autowired
    private WebSocketServer webSocketServer;

    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Override
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        //1.健壮性判断:地址是否为空,购物车是否有数据 也就是判断用户有没有进行前两步操作
        //1.1判断用户传过来地址是否为空
        Long addressBookId = ordersSubmitDTO.getAddressBookId();
        if (addressBookId == null) {
            throw new OrderBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        AddressBook addressBook1 = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        //检查用户的收货地址是否超出配送范围
        checkOutOfRange(addressBook1.getCityName() + addressBook1.getDistrictName() + addressBook1.getDetail());
        //2.判断购物车是否为空 为空抛出异常
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.getByUserId(BaseContext.getCurrentId());
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new OrderBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //查询地址信息
        AddressBook addressBook = addressBookMapper.getById(addressBookId);
        //封装订单数据，提交到orders订单表
        //获取订单对象 将需要数据set
        Orders orders = new Orders();
        //设置状态:代付款
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        //设置订单状态
        orders.setStatus(Orders.PENDING_PAYMENT);
        //设置用户Id
        orders.setUserId(BaseContext.getCurrentId());
        //设置下单时间
        orders.setOrderTime(LocalDateTime.now());
        //设置支付状态
        orders.setPayStatus(0);
        //设置收货地址相关信息 省市区以及地址明细
        orders.setAddress(addressBook.getProvinceName()
                + addressBook.getCityName()
                + addressBook.getDistrictName()
                + addressBook.getDetail());
        orders.setPhone(addressBook.getPhone());
        //设置收货人
        orders.setConsignee(addressBook.getConsignee());
        //属性拷贝前端数据到订单表
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        //新增订单
        ordersMapper.insert(orders);
        //封装订单明细数据,提交到order_detail
        ArrayList<OrderDetail> orderDetailArrayList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            //设置订单id
            orderDetail.setOrderId(orders.getId());
            orderDetailArrayList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailArrayList);
        //清空购物车
        shoppingCartMapper.deleteByUserId(orders.getUserId());


        Map hashMap = new HashMap();
        hashMap.put("type",1);
        hashMap.put("orderId",orders.getId());
        hashMap.put("content","来新单了");
     webSocketServer.sendToAllClient(JSON.toJSONString(hashMap));

        //封装返回结果
        OrderSubmitVO orderSubmitVO = new OrderSubmitVO();
        orderSubmitVO.setOrderTime(orders.getOrderTime());
        orderSubmitVO.setOrderAmount(orders.getAmount());
        orderSubmitVO.setOrderNumber(orders.getNumber());
        orderSubmitVO.setId(orders.getId());
        return orderSubmitVO;
    }


    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    @Override
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    @Override
    public void paySuccess(String outTradeNo) {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单号查询当前用户的订单
        Orders ordersDB = ordersMapper.getByNumberAndUserId(outTradeNo, userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        ordersMapper.update(orders);
    }

    /**
     * 历史订单分页查询
     *
     * @param page
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult gethistoryOrders(int page, int pageSize, Integer status) {
        //1.开启分页
        PageHelper.startPage(page, pageSize);
        //2.将根据id和状态查询数据 进行分页查询
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);
        Page<Orders> ordersList = ordersMapper.pageQuery(ordersPageQueryDTO);
        //3.创建一个list集合封装当前页面数据
        ArrayList<OrderVO> list = new ArrayList();
        //4.查询出订单明细,并封装入OrderVO进行响应
        if (ordersList != null && ordersList.getTotal() > 0) {
            for (Orders orders : ordersList) {
                Long ordersId = orders.getId();
                //查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(ordersId);
                //5.需要返回当前页面数据包order数据和明细数据和orders当中总条数
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);
            }
        }
        return new PageResult(ordersList.getTotal(), list);
    }

    /**
     * 订单详情
     *
     * @param id
     * @return
     */
    @Override
    public OrderVO getOrderDetails(Long id) {
        //1.根据订单Id查询订单数据
        Orders orders = ordersMapper.getById(id);
        //2.查询订单明细
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        //3.将数据封装到订单响应体 返回
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    /**
     * 用户取消订单
     *
     * @param id
     */
    @Override
    public void cancelOrder(Long id) throws Exception {
        //1.健壮性判断订单是否存在
        Orders ordersDB = ordersMapper.getById(id);
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //2.判断订单状态是否为待支付和待接单以外的状态  订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);

        }
        //3.如果为待接单状态取消订单则通知客户端退款
        Orders orders = new Orders();
        //修改订单id
        orders.setId(ordersDB.getId());
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    ordersDB.getNumber(), //商户订单号
                    ordersDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额
            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        ordersMapper.update(orders);

    }

    /**
     * 订单搜索
     *
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult orderConditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());

        Page<Orders> page = ordersMapper.pageQuery(ordersPageQueryDTO);

        //部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
        List<OrderVO> orderVOList = getOrderVOList(page);

        return new PageResult(page.getTotal(), orderVOList);
    }

    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        // 需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();

        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                // 将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String orderDishes = getOrderDishesStr(orders);

                // 将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);

    }

    /**
     * 各个状态的订单数量统计
     *
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        // 根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed = ordersMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = ordersMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = ordersMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        // 将查询出的数据封装到orderStatisticsVO中响应
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }

    /**
     * 订单明细
     *
     * @param id
     * @return
     */
    @Override
    public OrderVO details(Long id) {
        //将查的订单表数据和明细数据放到vo中
        OrderVO orderVO = new OrderVO();
        Orders orders = ordersMapper.getById(id);
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        orderVO.setOrderDetailList(orderDetailList);
        BeanUtils.copyProperties(orders, orderVO);
        return orderVO;
    }

    /**
     * 接单
     *
     * @param ordersConfirmDTO
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();

        ordersMapper.update(orders);
    }

    /**
     * 拒单
     *
     * @param ordersRejectionDTO
     */
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = ordersMapper.getById(ordersRejectionDTO.getId());

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == Orders.PAID) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }

        // 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        ordersMapper.update(orders);
    }

    /**
     * 取消订单
     *
     * @param ordersCancelDTO
     * @throws Exception
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = ordersMapper.getById(ordersCancelDTO.getId());

        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        ordersMapper.update(orders);
    }

    /**
     * 派送订单
     *
     * @param id
     */
    @Override
    public void delivery(Long id) {
        // 根据id查询订单
        Orders ordersDB = ordersMapper.getById(id);

        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        ordersMapper.update(orders);
    }

    /**
     * 完成订单
     *
     * @param id
     */
    @Override
    public void complete(Long id) {
        // 根据id查询订单
        Orders ordersDB = ordersMapper.getById(id);

        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        ordersMapper.update(orders);

    }

    /**
     * 检查客户收货地址是否超出收货范围
     *
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address", shopAddress);
        map.put("output", "json");
        map.put("ak", ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address", address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin", shopLngLat);
        map.put("destination", userLngLat);
        map.put("steps_info", "0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if (distance > 5000) {
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

    @Override
    public void checkoutTimeOut() {
        //1.查询订单状态是待支付,并且已经超时了的订单id
        //1.1获取十五分钟之前的时间对象
        LocalDateTime time = LocalDateTime.now().plusMinutes(-15);
        //1.2根据两个条件查询订单id:1.订单状态为未支付,2.时间在15分钟之前
        List<Long> ids = ordersMapper.getIdsByStatusAndOrderTime(Orders.PENDING_PAYMENT, time);
        //2.将超时时间订单状态改为已取消

        if (ids != null && ids.size() > 0) {
            for (Long id : ids) {
                //根据id修改订单改为已取消
                ordersMapper.update(Orders.builder().status(Orders.CANCELLED).id(id).build());
            }
        }
    }

    @Override
    public void checkProgressOrder() {
        //1.查询订单状态是待支付,并且已经超时了的订单id
        //1.1获取十五分钟之前的时间对象
        LocalDateTime time = LocalDateTime.now().plusHours(-1);
        //1.2根据两个条件查询订单id:1.订单状态为未支付,2.时间在15分钟之前
        List<Long> ids = ordersMapper.getIdsByStatusAndOrderTime(Orders.DELIVERY_IN_PROGRESS, time);
        //2.将超时时间订单状态改为已取消

        if (ids != null && ids.size() > 0) {
            for (Long id : ids) {
                //根据id修改订单改为已取消
                ordersMapper.update(Orders.builder().status(Orders.COMPLETED).id(id).build());
            }
        }
    }

    /**
     * 催单
     * @param id
     */
    @Override
    public void reminder(Long id) {
        //根据id查询有无此订单 没有抛出异常
        Orders orders = ordersMapper.getById(id);
        if(orders==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //基于WebSocket实现催单
        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","用户催单了");
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
}
